CodePudding user response:

 for (j=0; j
 CodePudding user response: 
First of all to ch the scanf is cross-border access problem, the result is undefined, in addition to STR is variable array, C language does not support this definition ~
 CodePudding user response: 
 
 reference 2 building self-confidence boy reply: 
 
 the scanf for ch is first cross-border access problem, the result is undefined, in addition to STR is variable array, C language does not support this definition ~ 
 
 
Then how can I change ah, I changed a few times still won't do 
 CodePudding user response: 
 
 wow kaka bju international reference 3 floor response: 
 
 
 
 Quote: refer to the second floor confident boy reply: 
 
 the scanf for ch is first cross-border access problem, the result is undefined, in addition to STR is variable array, C language does not support this definition ~ 
 
 
Then how can I change ah, I changed a few times still won't do  
 
 
Ch is defined as the first 8 bytes, later all don't need to be modified to the operation of the ch; 
The second defined two-dimensional array (length), rather than using an array variable;